42-507-31999
Final CompletionGLASSCOCK RANCH A
ZAVALA County · District 1 · TRINITY OPERATING (USG) LLC · PEARSALL (AUSTIN CHALK)
Permits
2
Max Depth
7,000 ft
First Permit
1983-10-03
Latest Activity
1984-08-17
Lifespan
< 1 yr
Regulatory Status
Schedule
OFF SCHEDULE
Completion
1984-06-15
Shut-In
—
Plugged
1986-10-31
EWA / Permit operator mismatch
Scheduling: TRINITY OPERATING (USG) LLC ≠ Permit: WINN EXPLORATION/DULCE COMPANY
Resolved via: scheduling → TRINITY OPERATING (USG) LLC
Operator History
originally filed by WINN EXPLORATION/DULCE COMPANY — asset transferred
Formation Tops (4) Elevation 642 ft (GR)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| ESCONDIDO | 3,294 ft | -2,652 ft |
| OLMOS | 4,313 ft | -3,671 ft |
| ANACACHO | 5,740 ft | -5,098 ft |
| AUSTIN CHALK | 6,042 ft | -5,400 ft |
As reported by operators on W-2/G-1 completion filings (RRC wellbore records). Depths are measured depth; names appear as filed. Subsea = reported elevation − measured depth (negative = below sea level; vertical wellbores only). View filings & logs at RRC ↗
Perforations (2)
| Interval | Type |
|---|---|
| 4,393–4,399 ft | Perforated |
| 6,090–6,581 ft | Perforated |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 10.75" | 262 ft | 240 sx |
| 7" | 6,090 ft | 2,130 sx |
Permit History (2)
Applications (2)
Records & Logs
4 completion filings on record.
Completion packets open directly (post-2011 filings include attached logs). Log images can't be deep-linked — clicking copies the API for you to paste.
No GPS coordinates yet
Well Details
- Well Number
- 9
- Max Depth
- 7,000 ft
- Drill Type
- Vertical
- County
- ZAVALA
- District
- 1
- Operator
- TRINITY OPERATING (USG) LLC
- Completed
- 1984-06-15
Operator
- Location
- HOUSTON
- P-5 Status
- Active (filed 2026-01-28)
- Cum Oil (all leases)
- 22,515,031 bbl
- Cum Gas (all leases)
- 284,930,581 mcf
- Activities
- OPRS/G, OPRS/O
- Total Permits
- 391